SeattleGarth Report post Posted September 28, 2020 (edited) Hi Guys! I just picked up a used 389-1. It’s. A dual needle postbed machine. From the needle plate up, the machine looks identical to my 255. I’m having a weird tension issue on the left, bottom side of the work. It’s not every stitch just purely random. I think I’ve determined the issue is on the bottom somewhere, as I’ve put both of the upper threads on the left needle, and has similar outcomes. Just wondering if any of you had ever seen this happen, and possibly offer a solution? Yellow is the bobbin thread. https://imgbox.com/utLPIcNH https://imgbox.com/BDk97LfG https://imgbox.com/W5i9aVy7 https://imgbox.com/302mEjXV https://imgbox.com/hYmwk4Ej https://imgbox.com/qSbIUSTm Edited September 29, 2020 by SeattleGarth Edit to add links Quote Share this post Link to post Share on other sites
shoepatcher Report post Posted September 29, 2020 Looks like a problem with the bobbin. No tensions at times. Remove the left bobbin case and check the tension spring. check for sear or grooves in it. Also make sure thread is clearing the bobbin case tab under the throat plate and bobbin case opener is in correct position. Check thread path on the left need from top thread guide to needle. glenn Quote Share this post Link to post Share on other sites
